Boost student response during any class activity or game! Sounds mimic real-world objects—a siren, a game-show buzzer, a laser and a "charge!" sound. Set of 4 (red, blue, green, orange) Each measures 3.5" in diameter Require 2 AAA batteries, not included Ages 3+

Key Features :

i : Also great for the classroom, to encourage student participation
ii : Sounds mimic real-world objects—a siren, a game-show buzzer, a laser and a "charge" sound
iii : Set of 4 buzzers